1.6 kinetics Flashcards
what is the rate of a reaction usually dependent on?
the concentration
what is the overall order of a reaction?
the sum of the original orders
what is the purpose of the k constant?
to take account factors other than concentration
what are the powers?
the order of the reactants
what is zero order?
changing concentration has no effect on the rate
what is 1st order?
doubling concentration doubles rate
what is 2nd order?
doubling concentration increases rate fourfold
what does a zero order graph look like?
horizontal
what does a 1st order graph look like?
diagonal line
what does a 2nd order graph look like?
curved upward line
how do you calculate k?
pick a set of data from experimental results and substitute the values
which step will always occur first in a reaction mechanism?
the rate-determining step
which reactants must be involved in the rate determining step?
those appearing in the rate equation
what do the reactant orders indicate about the reactant in the RDS?
the number of moles of it in the RDS
